Marijuana usage in some form (for recreational or medicinal purposes) is legal in 28 States. However, the Controlled Substances Act (CSA) lists marijuana as a Schedule I drug, meaning that federal law designates it as having no medical accepted use, a high risk of abuse, and a lack of accepted safety for use under medical supervision. Therefore, the use, possession or manufacture of marijuana is a federal crime unless used as part of a federally-approved research project. The CSA also conflicts with results of recent federal research projects that show marijuana may have medical benefits for some health conditions.

How does the CSA and the State laws relate to federalism? What do think are the next steps are to address the inconsistency between the CSA and federal agency positions?